what i need to do to join good guilds

hi

first my English is bad sry about that but i know that u will understand me and u will get the idea that i am talking about

ok so i am pala tank 477 ilvl / dps 474 ilvl i killed 6/6 mv normal playing in burning leagin UE the problem is I'm in a guild who consider me a spear member the leader just inv me to the raid group if 1 of his friends not online just so he can play u know i have a felling the we only in this guild to serve him so i decided to leave the guild and join other one but when i start looking for new guild i didn't find a good guild accept me i say i killed 6/6 normal the answer is sry man we cant take u we start hc and hof too . OK i know tactic for hof and mv hc but i didnt have a chance to do it coz my guild we going without me .

i am so depressed i spend hours flying in the city and just read the chat . how i can prove the i am good and know tacic if i dont have a chance to go to this raids

Well, they obviously had another 2 tanks lined up for heroic progression. Are you sure they need you?

The most important thing when looking for a guild to take you on into heroic modes is first impressions. Which means, in most cases, a badass application. How I managed to get into hardcore raiding in Cataclysm was when I applied for a guild in blues, but they decided to give me a trial due to the quality of my application and how much I knew about my class. I had only just switched roles, too, so I had little experience.

If I were you, I'd look for a guild that needs a tank at your level of raiding, make a very good first impression, in an application or however, and hopefully it will just work.

personally i've never joined a guild that just invites me. Ever.
I've only moved guilds once in my wow career not counting guilds dissolving and i took the game pretty seriously back then, good guilds make you make an application on their website, they require parses and references usually. as a tank you'll be in low demand as everyone has tanks and off specs, my suggestion to you would be to make a viable off spec and apply to guilds actively recruiting.
You'll never be first choice tank in a new guild, guilds that are at least 6/6 have better geared raiders than you that have probably been tanks for a long time for them so you'd have to earn your spot over time.

Look at your realm forums for guilds that are recruiting. Maybe look for a guild a little bit behind you on progression, they'll see your experience and see that you're someone who could help them. If you see a group pugging people in trade, join them, and if they're a group you like, inquire about joining their guild.